Mass-to-light ratios for binary pairs of dwarf irregular galaxies

Details Mass-to-light ratios for binary pairs of dwarf irregular galaxies Mass-to-light ratios for binary pairs of dwarf irregular galaxies

Apr 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...279l..19l&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 279, April 1, 1984, p. L19-L22.

Astronomy and Astrophysics

Astrophysics

26

Dwarf Galaxies, Galactic Structure, Mass To Light Ratios, Galactic Evolution, Mass Distribution

Scientific paper

Evidence from the dynamics of nine isolated binary pairs of dwarf irregular galaxies indicates very large mass-to-light ratios (20-5000 in solar units) on scales of 40-850 kpc. The existence of dark mass in dwarf irregulars is a necessary consequence of the view that dwarf spheroidals are the remnant of stripped irregulars, as it explains their continued existence after shedding a large fraction of their mass, as well as their final high mass-to-light ratios. Given the number of dwarf galaxies, the mass of the universe may well be dominated by matter associated with them.

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